Just in case you haven’t noticed, the Top 100 Alternative Search Engines (ASE) or “Alts,” list is compulsively organized in “Base 10.” It starts with the Master List of 1,000 ASE that is maintained by the “List Masters” so as to keep it up-t

opsdo has two goals - to allow people to search many information sources which mainstream search engines do not cover well and to allow people to search groups of such sources -- e.g. RottenTomatoes, IMDb and Amazon.

OpenSearch is a set of simple formats for the sharing of search results. Any website that has a search feature can make their results available in OpenSearch™ format. Other tools can then read those search results. For example, here is an aggregator tha